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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Capital One logo
Capital One
Medium
Software EngineerNew Grad

Find the Integer Point Covered by the Most Street Lamps

A street is modeled as a number line. You are given lights, where lights[i] = [position_i, range_i] describes a street lamp at integer coordinate posi...

Coding & AlgorithmsIntervals & Scheduling
41
0
309 people solved
Sep 27, 2026
IBM logo
IBM
Medium
Software Engineer

Count Employees With Unbroken Renewable Access at the Last Timestamp

An access system grants employees time-limited access. Employee i has a fixed access duration limits[i]. The system receives a log of access settings,...

Coding & AlgorithmsSimulation & State Machines
16
0
176 people solved
Sep 30, 2026
LinkedIn logo
LinkedIn
Hard
Software Engineer

Ad Hierarchy Event Tracker: Worst-K Ads by CTR Under a Campaign or Ad Group

Implement an in-memory tracker for advertising performance over a hierarchy of ad entities. A campaign can contain ad groups and also ads directly, an...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
0
0
9 people solved
Oct 30, 2026
Google logo
Google
Easy
Software EngineerIntern

Count Failed, Passed and Honors Exam Results From Percentage Scores

Students take an exam, and each result is a percentage score. Classify every result into one of three bands and count how many results fall into each ...

Coding & AlgorithmsArrays & Strings
1
0
14 people solved
Oct 26, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Route and Batch Inference with Eight GPUs

Evaluate inference routing and batching, then schedule large and small models across eight GPUs with explicit resource limits and overload behavior.

ML System DesignGPU InfrastructureMLOps & Model Serving
46
0
314 people solved
Sep 8, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Review and Improve Four AI-Assisted TypeScript Pull Requests

Work through four TypeScript pull requests by explaining intent, tracing surrounding code, and writing evidence-based review comments. Then select one...

Software Engineering FundamentalsAI-Assisted DevelopmentCode Quality & Maintainability
25
2
505 people solved
Aug 28, 2026
Roblox logo
Roblox
Hard
Software Engineer Locked

Count Distinct Hat Assignments and Maximize Hat Points

Count valid one-hat-per-person assignments and maximize assigned-hat points with exact counts, unique hat use, and bitmask or backtracking reasoning.

Coding & AlgorithmsDynamic ProgrammingBacktracking & Recursion
40
0
355 people solved
Sep 20, 2026
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Diagnose and Reduce Model Overfitting

How would you identify and address model overfitting? Give a concrete diagnostic sequence and a worked intervention rather than only listing regulariz...

Machine LearningML FundamentalsModel Evaluation
1
0
13 people solved
Oct 28, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Longest Streak of Consecutive Login Days by a Single User

You are given login records, each a user id and the calendar date of one login. Return the length of the longest streak of consecutive days on which a...

Coding & AlgorithmsArrays & Strings
1
0
17 people solved
Oct 24, 2026
Jane Street logo
Jane Street
Hard
Software Engineer Locked

Optimal Stopping with Square-Number Ruin

You repeatedly roll a fair six-sided die and add each roll to a running total. Explain the assumptions and derivation clearly, check edge cases, and s...

Statistics & MathPuzzles & BrainteasersProbability
145
2
1327 people solved
Aug 3, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, Oracle, Yandex, Adobe, LinkedIn, Apple, Goldman Sachs, Palo Alto Networks

Medium
Software Engineer

Group Binary-Tree Values by Left-to-Right Level

Problem Return the values of a binary tree one level at a time, starting at the root. Within each level, list nodes from left to right. Return a list ...

Coding & AlgorithmsTrees
5
0
33 people solved
Capital One logo
Capital One
Medium
Software EngineerNew Grad

Sort Each Adjacent Pair of an Array, Leaving an Odd Last Element in Place

Given an array of integers, sort it by pairs. Split the array into consecutive pairs starting from the first element, (nums[0], nums[1]), (nums[2], nu...

Coding & AlgorithmsArrays & Strings
14
0
218 people solved
Sep 27, 2026
Tower logo
Tower
Medium
Quantitative ResearcherIntern

Conditional Probability on a Six-Position Circular Arrangement

A circular device has six positions, exactly two marked and four unmarked. A starting position is chosen uniformly at random. You observe that the cur...

Statistics & MathProbabilityPuzzles & Brainteasers
1
0
15 people solved
Oct 24, 2026
Meta logo
Meta
Medium
Product Manager

Local Home-Repair Marketplace Inside Meta's Apps: Connecting Homeowners With Handymen

You are a product manager at Meta. Design a product, built on Meta's apps, that helps people find a handyman for repairs and small jobs around the hom...

Product Design & StrategyProduct SenseGrowth & Monetization
5
0
39 people solved
Oct 17, 2026
LinkedIn logo
LinkedIn
Easy
Software Engineer

Minimum index distance between two given words in a word list

Given a list of words and two different words that both occur in it, return the smallest distance between a position of the first word and a position ...

Coding & AlgorithmsArrays & Strings
9
0
74 people solved
Oct 4, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, Infosys

Medium
Software Engineer

Enumerate Every Fixed-Size Choice from a Range

Problem Return all distinct combinations of k different integers selected from the inclusive range 1 through n. A combination is a choice of members, ...

Coding & AlgorithmsBacktracking & RecursionMath & Number Theory
3
0
25 people solved
Waymo logo
Waymo
Medium
Data Scientist Locked

Average of a List of Integers, Returning 0 for an Empty List

Write a function that returns the arithmetic mean of a list of integers and returns 0 for an empty list. A warm-up from a timed data science assessmen...

Coding & AlgorithmsArrays & Strings
5
1
103 people solved
Sep 10, 2026
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Evaluate a Binary Model with Confusion Counts, Calibration, and Normalized Entropy

Explain the four cells of a binary classification confusion matrix, useful offline metrics, model calibration, and normalized entropy. Connect each me...

Machine LearningModel Evaluation
1
0
14 people solved
Oct 28, 2026
Robinhood logo
Robinhood
Medium
Software Engineer

Design a Cron Job Scheduler for 100K Jobs With At-Least-Once Execution

Design a job scheduler service. Users register recurring jobs, each with a cron expression that says when it runs, and the service must start a run of...

System DesignJob Scheduling & WorkflowsDistributed Coordination
5
0
64 people solved
Oct 2, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Meta, Bloomberg, TikTok, Goldman Sachs, Oracle, Zoho, Mastercard, TCS, Adobe, IBM, Infosys, Huawei

Hard
Software Engineer

List All Nonattacking Queen Boards

Problem Place n queens on an n by n chessboard so that no pair shares a row, column, or diagonal. Return every distinct valid board, without repeated ...

Coding & AlgorithmsBacktracking & RecursionGrids & Matrices
4
0
30 people solved
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